Find Your Perfect Loose Diamond or Gemstone
Explore our curated selection of loose diamonds and gemstones, then choose the stone that brings your custom piece to life.
Custom Engagement Ring Design
Design a one-of-a-kind engagement ring with our jewellery specialists. Meet virtually or in person and create a ring crafted around your story.
Appointments are available online or in person at our Toronto Office.
Designed In Toronto. Made With Love.
Learn Before You Buy
How to Design a Custom Engagement Ring
Custom vs Ready to Ship Engagement Rings
Buy Loose Diamonds Online
The Jacob Mercari Experience
A Guide to Lab-Grown Diamonds
Frequently Asked Questions
How does your ring builder work?
Step 1 - Choose your engagement ring setting from our catalogue.
Step 2 - Select the natural, lab-grown diamond or gemstone you like best.
Step 3 - Complete ring and checkout.
We will contact you after we receive your order with delivery times and a copy of your invoice.
How long will it take my ring to arrive?
Once your order is submitted, delivery will take roughly 4-6 weeks.
We can sometimes accommodate rush orders. Contact us before purchasing to confirm if this is possible.
Shipping times may vary based on unforeseen events. We will keep you updated should this occur.
What type of diamonds do you use in your engagement rings?
Our engagement rings come standard with lab-grown diamonds. If you prefer to use natural diamonds or gemstones in your ring. Please get in touch with us, and we can provide pricing.
What if I don't see the ring I want? Can I customize?
Certainly! We are expert makers of custom engagement rings. We can modify any style you see or create something from scratch. Book an appointment to discuss in more detail.
Does the engagement ring come with certification?
Yes, our engagement rings and jewellery come with an independent appraisal.
The appraisal will confirm the materials in the ring and include your name and retail value. Lab-Grown Diamonds come with a GIA or IGI certificate, and natural mined diamonds come with a GIA certificate.
The diamond grading report numbers are laser etched onto the girdle of each diamond.
Do you sell both engagement rings and fine jewellery?
Yes. In addition to engagement rings, Jacob Mercari offers fine jewellery including diamond necklaces, earrings, bracelets, rings, and meaningful everyday pieces.
This is THE place to get the ring. Greg is an absolute fantastic person to work with and his designs are flawless. He is patient, flexible, can work with any budget, and is incredibly welcoming. He makes the process stress free and super clear. My now fiance loves her custom ring and we’ll most likely come back for the wedding bands! Highly recommend!
Had a fantastic experience with Greg at Jacob Mercari! He was incredibly helpful throughout the process, from designing the ring to selecting the perfect stone. His expertise and suggestions made all the difference. Highly recommend!
I purchased an engagement ring online from their website. It was very easy. They contacted me right away and the communication was excellent. The ring shipped in a timely manner as they said 3 weeks and it came in 3 weeks. The ring came and it was AMAZING!! my fiancé was ecstatic. I highly recommend Jacob Mercari. Wish I could give more than 5 stars.
